Why does my logo upload as an invalid image type on Shopify?

[Will63]

I have just started making a Shopify store and in the brand section when I try to upload my logo file it says invalid image type. I have tried png and jpeg and ensured the size is correct and will fit. I am not sure what is wrong.

[SmallTask]

Hi @Will63 ,

Can you let me know the size you are uploading in site